Yuchi Nieh -

I need to cross-check all the information to ensure accuracy. If there's conflicting information, perhaps note that or cite sources. Since this is a guide, the goal is to provide a comprehensive yet concise overview that's helpful for both casual fans and those with prior knowledge of visual kei.

In terms of structure, maybe start with an introduction about visual kei and their role in it. Then go into their biography: early life, career, key projects, later life, and legacy. Add a section on their musical style and notable songs. Maybe a section on their influence and how they contributed to the visual kei scene. Include a FAQ for common questions. Finally, resources and recommended listens for readers interested in their music.

Also, consider cultural context. Visual kei has a distinct style, so explaining that briefly would add value. Mentioning the visual aspects of live performances, the typical themes in their lyrics, and how Yuchi Nieh's work fits into that.